/* 扇贝绿色主题 */
:root {
  --primary-color: #4caf50;
  --primary-light: #81c784;
  --primary-dark: #2e7d32;
  --primary-color-rgb: 76, 175, 80;
  --secondary-color: #8bc34a;
  --accent-color: #ffc107;

  --text-primary: #212121;
  --text-secondary: #757575;
  --text-white: #ffffff;

  --background-light: #f5f5f5;
  --background-white: #ffffff;
  --border-color: #e0e0e0;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: none;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-primary);
  background-color: var(--background-light);
  line-height: 1.6;
  font-size: 14px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 100px;
}

.btn-primary {
  background: var(--primary-color);
  color: var(--text-white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--secondary-color);
  color: var(--text-white);
}

.btn-secondary:hover {
  background: #689f38;
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.btn-success {
  background: #4caf50;
  color: var(--text-white);
}

.btn-success:hover {
  background: #45a049;
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.btn-danger {
  background: #f44336;
  color: var(--text-white);
}

.btn-danger:hover {
  background: #d32f2f;
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.card {
  background: var(--background-white);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 24px;
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.input-group {
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-primary);
}

.input-group input,
.input-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.3s ease;
}

.input-group input:focus,
.input-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.text-center {
  text-align: center;
}

.mb-2 {
  margin-bottom: 16px;
}
.mb-3 {
  margin-bottom: 24px;
}
.mb-4 {
  margin-bottom: 32px;
}

.mt-2 {
  margin-top: 16px;
}
.mt-3 {
  margin-top: 24px;
}
.mt-4 {
  margin-top: 32px;
}
